Bi-axial rotating magnetic therapeutic device

ABSTRACT

A device for applying a time-varying magnetic field to a human or animal body for therapeutic purposes comprising a magnetic body ( 72 ), housed in a free moving member ( 80 ), which is it-self housed within the device. The device is powered by a small electric motor that drives the free moving member ( 80 ) and magnetic body ( 72 ) to rotate about an axis of first rotation. The magnetic body is further caused to rotate around an axis of second rotation through angular forces imparted on it either mechanically or magnetically. Mechanical angular force is imparted by a gear and tooth arrangement or other similar tactile interaction with a roller member ( 106 ). Magnetic angular force is imparted by stationary magnets ( 110 ) as the magnetic body ( 72 ) rotates past them. The two rotational movements of the magnetic body ( 72 ) are oblique to one another and produce both a time-varying field of magnetic flux density and a time varying field of angular flux displacement.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application claims the benefit of International Publication No. WO03/74124, filed Nov. 20, 2002, and also is a continuation-in-part ofU.S. patent application Ser. No. 10/087,135, filed Feb. 28, 2002, nowU.S. Pat. No. 6,648,812, which is incorporated by reference as if fullystated herein, and which claims the benefit of U.S. Provisional PatentApplication Ser. No. 60/272,384 filed Feb. 28, 2001.

TECHNICAL FIELD

This invention relates generally to a magnetic field generatingapparatus and more specifically to a magnetic field generating apparatusthat produces a time-varying angular displacement of magnetic fluxdensity for use in therapeutic applications on humans or on animals.

BACKGROUND ART

Various devices have been made to create time-varying magnetic fieldsfor use on the human body. Generally, two types of time-varying magneticfields have been used. The first type used an alternating current (“AC”)field that is produced when electric current is caused to alternate atany given frequency. In accordance with Maxwell's equations, a magneticfield is concurrently produced at the same frequency as the electricfield. Included in this first type of time-varying magnetic field deviceare pulsed electromagnetic fields (PEMF) which are generated when acurrent is caused to move through a conductor in discrete impulses ofelectric charge moving in the same direction.

A second general type of device for creating time-varying magneticfields involves physically moving a static magnetic field through space.While linear displacement is one way to accomplish this, another commonmethod involves rotating the static magnetic field. The source of thestatic magnetic field is generally a permanent magnet, since anelectromagnet requires considerable expenditure of energy in the form ofcurrent generation and the subsequent dissipation of unwanted heatenergy.

The therapeutic uses of time-varying magnetic fields have been describedand clinically evaluated in numerous literature. The more popularpublications written for the general public include “Magnetic Therapy”by Dr. Ronald Lawrence and Dr. Paul Rosch, “The Pain ReliefBreakthrough” by Dr. Julian Whitaker and Brenda Adderly, and “MagneticTherapy in Eastern Europe” by Dr. Jiri Jerabek and Dr. William Pawluk.These books offer numerous references to clinical studies which purportto show the effectiveness of time-varying magnetic fields for thetreatment of a multitude of chronic and acute conditions includingatherosclerosis, carpal tunnel syndrome, chronic bronchitis,post-ischemic injury, edema, fractures, infected wounds, limb grafts,burns, scars, macular degeneration, etc. The lack of any substantialnegative side effects is also purported for most treatments. In recentyears, the general public and even the medical community haveincreasingly accepted magnetic therapy as an alternative treatmentworthy of consideration for such conditions.

Patented devices, which utilize permanent magnets to produce atime-varying magnetic field for therapeutic purposes, include Horl U.S.Pat. No. 4,727,857; Kleitz U.S. Pat. No. 5,632,720; and Souder U.S. Pat.No. 6,001,055. All of these devices function by causing permanentmagnets to rotate around a fixed axis. The magnetic field generated byeach of these devices sweeps out into space in a single direction.Changing the angle of the rotation requires manual manipulation of theentire device since the axis upon which the magnets rotate isstationary. It has been observed that the angle at which magnetic fluxlines cut through tissue can influence the degree of beneficial effects.What is needed therefore is a handheld device or a device capable ofbeing attached a part of the body or to clothing, or the like, that willcreate a sweeping magnetic field in a multitude of directions, thusproviding more complete angular coverage to the part of the body beingtreated with the moving magnetic field.

DISCLOSURE OF INVENTION

The present invention provides a magnetic field that varies in intensityand/or in polarity by causing a magnet to rotate about two axes at thesame time. This is accomplished by rotating a magnet about a first axisand concurrently or intermittently rotating this first axis around asecond axis that is oblique from the first axis.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a top view of one embodiment of the pertinent features of thepresent invention.

FIG. 2 is a front view of one embodiment of the present invention.

FIG. 3 is a perspective view of another embodiment of the presentinvention.

FIG. 4 is a perspective view of another embodiment of the presentinvention.

FIG. 5 is a perspective view of a cover of one embodiment of the presentinvention.

FIG. 6 is a perspective view of another embodiment of the presentinvention.

FIG. 7 is a perspective view of another embodiment of the presentinvention.

FIG. 8 is a perspective view of another embodiment of the presentinvention showing a magnetic unit and a free moving member.

FIG. 9 is a perspective view of the embodiment shown in FIG. 8 furthershowing an enclosure assembly 90 and retainer member 92.

FIG. 10 a perspective view of the embodiment shown in FIG. 9 from adifferent angle showing annular rolling surface 78 and pivot member 79.

FIG. 11 is a perspective view of the embodiment FIG. 8 further showing aDC motor and right-angle gear box attached to the magnetic unit and apartially disassembled cover for enclosing the invention.

FIG. 12 is a perspective view of the embodiment FIG. 8 further showinghow the component parts fit in cover 94.

FIG. 13 is a perspective view of the embodiment shown in FIG. 12 from adifferent angle.

FIG. 14 is a perspective view of a cover 94 for the embodiment shown inFIG. 8.

FIG. 15 is a perspective view of the cover 94 of the embodiment shown inFIG. 14 from a different angle.

FIG. 16 is an exploded view of another embodiment of the presentinvention showing bearing members 106 and openings 88.

FIG. 17 is a partially exploded perspective view of an embodiment of thepresent invention showing a stationary magnet 110 on the stationarytrack 116.

FIG. 18 a is a top plan view of an embodiment of the present inventionshowing a stationary magnets on stationary track 116.

FIG. 18 b is a top plan view of an embodiment of the present inventionshowing six (6) stationary magnets on stationary track 116.

MODE(S) FOR CARRYING OUT THE INVENTION

The detailed description set forth below in connection with the appendeddrawings is intended as a description of presently-preferred embodimentsof the invention and is not intended to represent the only forms inwhich the present invention may be constructed and/or utilized. Thedescription sets forth the functions and the sequence of steps forconstructing and operating the invention in connection with theillustrated embodiments. However, it is to be understood that the sameor equivalent functions and sequences may be accomplished by differentembodiments that are also intended to be encompassed within the spiritand scope of the invention.

One embodiment of the present invention is illustrated in FIG. 1. Inthis embodiment, the action of the bi-axial rotation is accomplished bymounting a permanent magnet 2 on a rod 4 that has a drive gear 6, orother meshing or traction surface arrangement, attached at one end.Although a gear system is used in the preferred embodiment, otherembodiments without the use of gears can be used, such as an o-ring,sprocket, or rubberized surface capable of imposing an angular force onthe rod by contact with an external force. The magnet 2, rod 4 and drivegear 6 assembly is then placed on a rotatable circular track 8, havingeither matching gear teeth or other surface for exerting this externalforce on the ends of the rod 4. The magnet 2 can be rectangular orsubstantially spherical in shape.

In one embodiment, rod 4 is sandwiched between the rotatable circulartrack 8 and a matching stationary circular track 16, which faces therotatable circular track 8. A motor 20 is coupled to the rotatablecircular track 8 and causes the track to rotate. The angular forceimparted on drive gear 6 causes rod 4 to turn with track 8. Since thedrive gear 6 is engaged with the surfaces of both circular tracks 8 and16, drive gear 6 is forced to roll at the same time it moves along thecircular tracks. The drive gear 6 causes rod 4 to roll like an axle in adirection perpendicular to the direction of the rotation of rod 4 aroundthe circular tracks 8 and 16. The magnet 2 is thereby caused to move inboth a primary rotational movement and a secondary rotational movement,both turning and rolling the magnet 2. As a result, this configurationcreates a complex bi-axial sweeping action of the magnetic field. Asshown in FIG. 1, a placeholder or floating gear 6′ is placed on the endof rod 4 opposite drive gear 6 for balance and stability purposes.Floating gear 6′ is rotatably mounted to rod 4 so that this gear 6′ doesnot impart a rolling force on rod 4, and only the drive gear 6 causesrod 4 to roll.

In particular, one embodiment of the present invention is shown in FIGS.1 and 2. FIG. 1 illustrates the embodiment from a top view showing thestationary gear track 16, gear teeth 10, magnetic unit 2, the ends ofrod 4, drive gear 6, and floating gear 6′. FIG. 2 shows the embodimentfrom a side view further showing free moving gear ring 8 and motor 20.(In FIG. 1, the free moving gear ring 8 and motor 20 have been removedfor purposes of illustration of the gears 6 and 6′ and stationary geartrack 16.) As shown in FIG. 1, a magnetic unit 2 is mounted to a rod 4.Although the magnetic unit 2 shown in this embodiment is spherical inshape, other shaped magnets can be used such as a bar magnet, a sheetmagnet having a pre-determined magnetic pattern, or the like.Additionally, although the embodiment illustrated shows rod 4 extendingthrough magnetic unit 2, rod 4 may alternatively attach to one side orend of magnetic unit 2.

One end of the rod 4 contains a drive gear 6 that rides between astationary gear ring 16 and free moving gear ring 8. The other end ofrod 4 contains floating gear 6′ which likewise rides between astationary gear ring 16 and free moving gear ring 8. Preferably, thestationary gear ring 16 and the free moving gear ring 8 are made from agenerally non-magnetic material so as not to interfere with the magneticfield produced by the magnetic unit 2. The free moving gear ring 8 hasgear teeth 9 on a first surface 12 and gear teeth 11 on a second surface14. Motor 20 drives gear 18, which in turn engages gear teeth 9 of thefirst surface 12 of ring 8, either directly or indirectly. Accordingly,as the gear 18 turns, it drives the free moving gear ring 8.

As the free moving gear ring 8 turns, the rod 4 is forced to turn,creating a primary rotational movement of the magnetic unit 2 becausegears 6 and 6′ are engaged with the gear teeth 11 on the second surface14 of the free moving gear ring 8. End gears 6 and 6′, however, alsoengage the teeth 10 on the surface of stationary ring 16. While floatinggear 6′ is rotatably mounted to one rod 4, and thereby does not impart arolling force on rod 4, drive gear 6 is fixed to the other rod 4. As aresult, when drive gear 6 is forced to roll as it rotates along freemoving gear ring 8, rod 4 is forced to likewise roll about this secondaxis. Hence, a bi-axial rotation of magnetic unit 2 is produced,creating a complex bi-axial sweeping action of the magnetic field. Withthis design, only a single magnet 2 is necessary to produce this complextime-varying magnetic field. The entire embodiment can be housed insidea plastic housing (e.g., see FIGS. 5 and 11 through 15) allowing thespherical magnetic unit 2 to rotate freely about two separate axes. Thepresent invention can be positioned or moved by hand over a desiredregion of the human body, or it can be attached to a part of the user'sbody or clothing.

In another embodiment a magnet assembly comprises a free moving member30 having one or more extensions surrounding a magnetic unit 22. A rod24 is mounted to the magnetic unit 22. The two ends of the rod 24 extendbeyond the free moving member 30. A rolling member 26 is fixed to oneend of rod 24. (Optionally, a slipping member may be rotatably mountedto the opposite end of rod 24, it has been found that, given sufficientprecision of component parts, and minimization of the tolerancesinvolved, a second floating or slipping member is not necessary.) Thisembodiment includes a cover 52 that surrounds the magnet assembly andhas an inner surface that defines a circumferential groove that housesthe rolling member 26, and that defines one or more pivot members 79 forpivotally retaining the magnet assembly. The rod 24, the rolling member26, the free moving member 30, and the cover 52 are all preferably madeof substantially non-magnetic materials.

A motor 42 or the like is coupled to an extension 36 on the free movingmember 30, either directly or indirectly using a drive belt, gear box,or the like. The turning of the motor 42 then causes the magnet assemblyto rotate. As the magnet assembly rotates, the rolling member and theslipping member are forced to roll due to contact with an annularsurface 28 of the circumferential groove formed in the inner surface ofthe cover 52. This rolling action of the rolling member 26 causes themagnetic unit 22 to roll. Thus, the magnetic unit 22 both rotates aboutone axis and rolls about another, producing a time-varying field ofmagnetic flux density and a time-varying field of angular fluxdisplacement for use in connection with humans or animals fortherapeutic purposes.

One example of this embodiment is shown in FIG. 3. As in the priorembodiment, the magnetic unit 22 is mounted to a rod 24. One end of therod 24 has a rolling member 26, which is in contact with the annularsurface 28. Surface 28 may be formed in the cover as described above andsurrounds the magnetic unit 22. In FIG. 3, the rest of the cover hasbeen removed so that only surface 28 is shown in the illustration.Surface 28 can also be a stationary ring with sufficient surfacetraction to exert an angular force on rolling member 26. The rollingmember 26 and/or surface 28 would preferably consist of an elastomericmaterial or other material with sufficient gripping properties. Also,surrounding the spherical magnetic unit 22 is a free moving member 30,which is radially inside and oblique to surface 28. The rod 24 rotatablyextends through openings 25 in the free moving member 30. As a result,when the rolling member 26 rotates along the surface 28, so does thefree moving member 30, but the rolling action of the rolling member 26does not cause the free moving member 30 to likewise roll.

On each of the first half 32 and the second half 34 of free movingmember 30 there exists an extension 36 that is pivotally mounted to acasing or cover 52. An example of such a cover is shown in FIG. 5, andan example of a pivot member 79 for pivotally mounting the free movingmember 30 within the cover 52 is shown in FIG. 10. Attached to theextension 36 on the first half 32 of the free moving ring 30 is a drivebelt 38. In this embodiment, the drive belt 38 is a rubberized belt, butcan be any material with similar properties, such as a toothed belt,chain, or the like. The drive belt 38 also attaches to a rotatable unit40 that attaches to a motor 42. Motor 42 can be a single speed motor ora motor having varying speed capabilities.

Thus, motor 42 along with rotatable unit 40 constitutes a primaryrotational means, which causes magnetic unit 22 and free moving member30 to rotate about one axis. While the free moving member 30 rotates,not only does the magnetic unit 22 rotate according to this primaryrotation means, but also according to the secondary rotation meanscreated by the interaction of rolling member 26 and annular rollingsurface 28.

FIG. 4 represents yet another embodiment of the present invention. Inthis embodiment, a motor 43 is directly connected to the extension 46,with no need for a drive belt. The motor 43 turns the extension 46directly, causing the free moving member 50 to rotate and having thesame effect on the other parts in this embodiment as in theprior-disclosed embodiment.

FIG. 5 represents one type of cover 52 that may be used in conjunctionwith the presently preferred embodiments of the present invention. Thecover 52 contains a power switch 56 connected to the motor (not shown).In the preferred embodiments, the cover is made of plastic, but can bemade of other materials with similar generally non-magnetic properties.However, this invention can function independently without the use ofthe cover, or with the use of a partially transparent cover, such aswindow 54, so as to show the user the complex movement of the internalmagnetic unit 22.

While FIGS. 1 and 2 illustrate one embodiment of the present inventionin which gear teeth 9 and gear teeth 11 are on opposing surfaces of gear8, other embodiments are equally contemplated by the present invention.For example, in FIG. 6, a motor 64 is in communication with the radiallyexternal surface of rotatable gear 68. As shown in FIG. 6, motor 64causes drive belt 60 to turn gear 68, which is turn causes magnetic unit62 to likewise turn. Magnetic unit 62 rotates as it turns becauserotatable end means 66 is sandwiched between rotatable gear 68 and afixed gear as described previously with respect to FIG. 2. The fixedgear is removed from view in FIG. 6 for purposes of clarity of theillustration. This fixed gear in combination with rotatable gear 68causes rotatable end means 66 to rotate. As a result, magnetic unit 62,just as in FIGS. 1 and 2, rotates about two axes.

FIG. 6 illustrates an embodiment in which motor 64 is in communicationwith gear 68 indirectly, utilizing a drive belt 60. The drive belt shownis a rubberized drive belt, but could just as easily be a toothed belt,a chain, or the like, provided that the radially external surface ofrotatable gear 68 comprises a matching gear, sprocket, or other frictionfeatures so that an angular force is exerted in the rotatable gear 68.Alternatively, motor 64 could be positioned so as to directlycommunicate with the radially external surface of gear 68 by way of anorthogonal or beveled gear and tooth configuration, or other combinationof gripping surfaces as shown in FIG. 7. The result in each instance isthe same; magnetic unit 62 is caused to rotate in two axes at the sametime thereby causing a complex bi-axial sweeping motion of the magneticfield emanating therefrom.

Another embodiment is shown in FIGS. 8 through 15. Like in theembodiments of FIG. 3, a motor 74 (shown in FIG. 11) exerts an angularforce on magnetic unit 72 while annular rolling surface 78 remains fixedrelative to cover 52. As a result, the magnetic unit 72 fixed to an endrolling member 76, as described in detail above with respect to rollingmember 26, is forced to both rotate about a primary axis and at the sametime roll about a secondary axis. In contrast to FIG. 3, the axis ofrotation of the motor is perpendicular to the primary axis of rotationof the magnet assembly.

More particularly, the magnetic unit 72 is housed inside a free movingmember 80 comprising a first half 81 and a second half 83. When matingsurfaces 82 and 84 of the first and second halves of the free movingmember 80, the inner surface of the free moving member 80 defines anapproximately spherical chamber in which the magnetic unit 72 is held.With magnetic unit 72 placed in the chamber, mating surfaces 82 and 84are then welded together at a sufficient number of places along towithstand the sort of impacts that are common to home appliances, suchas being dropped during use, etc.

Mating surfaces 82 and 84 also define one or more clearances 87. Whenmating surfaces 82 and 84 are welded together, these clearances 87define openings 88. The magnetic unit 72 further comprises twoprotruding arms 73 which extend away from magnetic unit 72 indiametrically opposite directions and extend through and beyond twoopenings 88. The arms could be separate pins or rods or the likeextending from the magnetic unit 82, or they could alternatively be thedistal ends of a single extending rod or pin. The present inventionequally contemplates a magnetic unit 72 having only a single protrudingarm or pin 73 provided the magnetic unit 72 remains sufficiently stableand free to rotate about an axis defined by the elongate length of saidprotruding arm 73. The chamber defined by the internal surfaces of thefree moving member 80 and the openings 88 defined by the clearances 87formed in mating surfaces 82 and 84 are both large enough to looselyretain magnetic unit 72 and protruding arms 73, respectively. Thus,while magnetic unit 72 is substantially enclosed within the free movingmember 80, the magnetic unit 72 is capable of freely rotating relativeto the free moving member 80 about the axis of rotation defined by theone or two protruding arms 73.

The free moving member 80 is held in an enclosure assembly 90. Theenclosure assembly 90 comprises an inner surface 91 which defines anapproximately spherical chamber, an annular rolling surface 78 formed ininner surface 91, and a pivot member 79 disposed in the inner surface91. Also, a portion of the inner surface 91 functions as a wave washerretaining surface, as discussed further below. The enclosure assembly 90is preferably fixed relative to the cover 52 and thus may be mounted tothe cover or integrally formed in the inner surface of the cover 52. Ineither case, there is sufficient clearance between the outer surface ofthe free moving member 80 and the inner surface 91 of the enclosureassembly 90 so that the free moving member 80 may rotate about a pivotstructure 86 which is formed in the first half 81 of free moving member80 and which pivotally engages pivot member 79. FIG. 10 illustrates anembodiment that utilizes a bearing pin as pivot member 79. This functionof pivotally mounting the free moving member 80 inside the enclosureassembly 90 may likewise be accomplished by other engaging structures,such as a circular recess formed in the enclosure coupled with a pointformed at the apex of the first half 81 of the free moving member 80.

As mentioned above, in a preferred embodiment, the rotation of motor 74is perpendicular to the desired rotation of the free moving member 80.The rotary motion of motor 74 is translated by a standard right-anglegear box 75, which comprises two mating angled gears or the like. At thesame time, the speed of the motor may also be stepped up or down, whichwill inversely affect the torque of the imparted rotary motion.Presently, the best made involves a direct current or “DC” motorconnected to a right-angle step-down gear box 75 for producing aten-fold increase in torque. The DC motor is powered by a rechargeablebattery 70 housed in battery case 70′ or directly from an AC/DC powerconverter 71 through plug-in jack 71′, which may also operate as abattery recharger as is common in home appliances.

The resultant rotary force of the motor, once translated 90° and steppeddown by the gear box 75, drives free moving member 80 much the same wayas illustrated in and discussed with respect to FIG. 4, above. Thedriving shaft (not shown) extends through axial opening 89 and directlyimparts an angular force on drive extension 85 located at the apex ofthe second half 83 of free moving member 80.

The end of one of the protruding arms 73 is equipped with rolling member76. As free moving member 80 rotates, rolling member 76 is dragged alongthe annular rolling surface 78. Annular rolling surface 78 imparts anangular force on rolling member 76 as the latter moves along the annularrolling surface 78. A retainer member 92 is placed between the innersurface 91 of the enclosure assembly 90 and free moving member 80 toexert a downward axial force on free moving member 80. While theretainer member illustrated in FIG. 9 is a spring washer or wave-typewasher, other means are equally contemplated for exerting an axial forceon free moving member 80, such as a leaf spring, compression spring,diaphragm, or the like. This insures that a sufficient amount of contactoccurs between rolling member 76 and annular rolling surface 78 tocreate this angular force on rolling member 76. As a result, rollingmember 76 is forced to roll about the axis of its elongate dimension. Aslipping member may be utilized in the opposite projecting arm 73, asdescribed above in relation to FIGS. 3 and 4. With sufficiently tighttolerances between the magnet assembly and the enclosure assembly,however, a slipping member can be made to be unnecessary.

It is believed to be additionally advantageous to provide the operatorwith a visual means to realize the great degree of complex bi-axialmovements that magnetic unit 72 is forced to make by this configuration.In FIG. 8, the first half 81 of free moving member 80 is shown as havinglarge openings. This allows the complex movements of the magnetic unit72 to be visible from outside the free moving member 80. It is equallycontemplated that a transparent or semi-transparent material could beused to accomplish similar advantageous results. Similarly, the lowerhalf 93 of the enclosure assembly 90 in FIG. 9 may be made from atransparent or semi-transparent material, or be formed with relativelylarge openings as with first half 81. A window or lens 96, as shown inFIGS. 11 through 14, may form a part of cover 94.

In addition to the window or lens 96, the configuration shown in FIGS.12 and 13 provide a particularly efficient packaging of the presentinvention. The two halves of the cover 94 are plastic and molded to fittogether and capture the window or lens 96, the power switch 98, themotor 74 and gear box 75, the battery case 70′, DC plug-in jack 71′, andthe enclosure assembly 90. That is, essentially every component of theproduct is captured in one of the molded cover halves, the other halftherefore being capable of removal without disrupting the arrangement ofthe components of the invention and product. FIGS. 12 and 13 show fromthe top and bottom, respectively, the efficient packing of the essentialand auxiliary components for the present invention in the embodimentshown. FIGS. 14 and 15 show from the bottom and top, respectively,another cover contemplated by this invention. The power/recharge cord isdetachable from the product and is not necessary for proper operation ofthe present invention, as the motor can run on batteries 70 as shown inFIG. 13.

Again, as mentioned above, all components other than the magnet unit arepreferably made out of material that will not negatively affect themagnetic flux emanating from the magnetic unit 72. Instead, it ispresently believed that the proper selection of materials for theenclosure assembly may be able to positively affect the magnetic flux byconcentrating the magnetic energy and refocusing it towards the bodypart being treated.

Another embodiment of the present invention is illustrated in FIGS. 16and 17. In this embodiment, bi-axial rotation of the magnetic body isproduced by introducing a stationary magnetic field oblique to therotation of the magnetic body. The stationary magnetic field causes therotating magnetic body to roll about an axis of second rotation that isoblique to its axis of first rotation. The embodiment illustrated inFIG. 17 comprises at least one stationary magnet 110 fixed relative tothe stationary track 116, which may typically, but not necessarily, alsobe fixed relative to the enclosure assembly 90.

Magnetic body 72 rotates about an axis of first rotation in concert withfree moving member 80, whereas the stationary magnet or magnets 110 donot rotate with free moving member 80. Magnetic body 72 is itselfmounted rotatably within free moving member 80, such as by rollerbearings 106 fixed to protruding arms 73 and mounted in openings 88 ofenclosure assembly 90, and thereby can rotate about an axis of secondrotation. When magnetic body 72 rotates about the axis of firstrotation, it encounters the magnetic field emanating from the stationarymagnets 110. This fixed magnetic field interacts with the rotatingmagnetic field of magnetic body 72, and thereby causes magnetic body 72to rotate about the axis of second rotation without the magnetic body 72or its protruding arms 73 ever making physical contact with stationarytrack 116.

In the embodiment shown in FIGS. 16 and 17, the stationary track 116 isslightly larger in diameter than the free moving member 80, and itpreferably has 1 to 8 miniature surface button magnets attached to orembedded in the wall of the track preferably being evenly spaced aroundthe track. Each stationary magnet 110 is preferably oriented such thatone of its magnetic poles is pointed in the direction of the magneticbody 72. As a result, the effect of the magnetic flux of the stationarymagnets 110 on magnetic body 72 is maximized. Alternatively, thestationary track 116 may be made entirely of a magnetic material thatcan be singularly magnetized in an orientation oblique to the axis offirst rotation or magnetized in sections of alternating polarity toproduce the same effect as the separately attached button magnetsdiscussed above on the magnetic body 72.

Consequently, magnetic body 72 rotates either intermittently orconstantly about the second axis of rotation due to its interactionswith the magnetic flux of the stationary magnets 110 as the magneticbody 72 is forced to rotate about the first axis of rotation by the freemoving member 80. This biaxial rotation occurs without magnetic body 72ever making physical contact with the stationary track 116 but insteadonly engages magnetically with the track 116 by interacting with one ora combination of stationary magnetic fields. This embodiment thereforehas the added advantage of reducing the point of physical contact andthus the number of parts that encounter friction and wear and tear. Theembodiment is also somewhat less noisy due to this reduction incontacting parts.

Yet another embodiment of the present invention involves placing thismagnet-to-magnet interaction effect at the surface of the outwardlyextending roller member. That is, a magnetic roller member, in place ofthe roller member 76 shown in a number of the embodiments above, mayextend beyond free moving member 80 and, as it rotates about the axis offirst rotation, travel in a circle just above stationary track 116. Inthis embodiment, the magnetic roller member comprises one or moremagnets that interact with one or more stationary magnets 110 alongstationary track 116 to cause the magnetic roller members to roll aboutthe axis of second rotation. This arrangement creates the necessarymagnetic coupling to turn the magnetic body 72 about the axis of secondrotation while it is being rotated about the axis of first rotation.

In this embodiment, each stationary magnet 110 is preferably oriented sothat one of its magnetic poles is pointed in the direction of themagnetic roller member as it passes immediately overhead. As a resultthe magnetic effect of the stationary magnets 110 on the magnetic rollermembers is maximized, and the angular force on the magnetic body 72 tocause it to rotate about the axis of second rotation is therebymaximized.

While the present invention has been described with regards toparticular embodiments, it is recognized that additional variations ofthe present invention may be devised without departing from theinventive concept.

INDUSTRIAL APPLICABILITY

It is an object of the present invention to provide a handheld devicefor applying a time-varying magnetic field for use on the body of ahuman or animal. Another object of the present invention is providing atherapeutic device that causes the magnetic field to vary in time inmore than one direction.

Another object of one embodiment of the present invention to provide adevice that can be hand held or attachable to a part of a body or toclothing for applying a time-varying magnetic field to the body.

These and other objects and advantages of the present invention will beapparent from a review of the following specification and accompanyingdrawings.

1. A magnetic therapeutic system, comprising: a magnetic unit comprisinga spherical configuration; a free moving member rotationally coupled tosaid magnetic unit; and means for rotating said free moving member, saidmagnetic unit being contemporaneously rotatable about at least one axisby the free moving member and the rotating means acting in concert, andsaid free moving member coupled to said magnetic unit via a couplingselected from a group consisting of a gearing and a friction coupling.2. The system of claim 1, wherein said magnetic unit further comprises arod configured to couple to said free moving member.
 3. The system ofclaim 2, further comprising a housing configured to enclose saidmagnetic unit, said free moving member, and said means for rotating. 4.The system of claim 1, wherein said magnetic unit is generallyspherical.
 5. The system of claim 1, wherein said free moving member iscoupled to said magnetic unit via bearings.
 6. A magnetic therapeuticsystem, comprising: a magnetic unit comprising a rod and a sphericalconfiguration; a free moving member rotationally coupled to saidmagnetic unit via said rod; and means for rotating said free movingmember, said magnetic unit being contemporaneously rotatable about atleast one axis by the free moving member and the rotating means actingin concert, and said free moving member coupled to said magnetic unitvia a coupling selected from a group consisting of a gearing and afriction coupling.
 7. The system of claim 6, further comprising ahousing configured to enclose said magnetic unit, said free movingmember, and said means for rotating.
 8. The system of claim 6, whereinsaid magnetic unit is generally spherical.
 9. The system of claim 6,wherein said free moving member is coupled to said magnetic unit viabearings.
 10. A magnetic therapeutic system, comprising: a magnetic unitcomprising a rod and a spherical configuration; a free moving memberrotationally coupled to said magnetic unit via said rod; and a motorcoupled to said free moving member and configured to rotate said freemoving member, said magnetic unit being contemporaneously rotatableabout at least one axis by the free moving member and the motor actingin concert, and said free moving member coupled to said magnetic unitvia a coupling selected from a group consisting of a gearing and afriction coupling.
 11. The system of claim 10, further comprising ahousing configured to enclose said magnetic unit, said free movingmember, and said means for rotating.
 12. The system of claim 10, whereinsaid free moving member is coupled to said magnetic unit via a frictioncoupling.
 13. The system of claim 10, wherein said free moving member iscoupled to said magnetic unit via bearings.
 14. A method of providing atime-varying field of magnetic flux density, comprising: providing amagnetic unit; rotationally coupling said magnetic unit to a free movingmember said rotating said free moving member is accomplished at least inpart by motor; and rotating said magnetic unit about a second axis. 15.The method of claim 14, wherein said rotating said magnetic unit iscaused at least in part by said rotating said free moving member.